A. correspondence B. comedy C. folk song D. pencil case A. science B. yuan C. truly D. gradually A. swim B. jog C. drive D. gunpowder A. grow B. fit for C. farmland D. blunt A. remains B. developer C. quiet D. hum A. involve B. moon cake C. golden throne D. senior A. work B. housework C. Yes,please D. complex A. Canadian B. city C. tin D. benefit A. wheat B. really C. dream about D. narrator A. per cent B. ours C. sprain D. hospitable